(19)
(11) EP 1 382 873 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
31.03.2004 Bulletin 2004/14

(43) Date of publication A2:
21.01.2004 Bulletin 2004/04

(21) Application number: 03017281.1

(22) Date of filing: 27.06.1996
(51) International Patent Classification (IPC)7: F16D 13/64, F16F 15/121
(84) Designated Contracting States:
DE FR GB

(30) Priority: 30.06.1995 JP 18864595

(62) Application number of the earlier application in accordance with Art. 76 EPC:
00110840.6 / 1030072
96110389.2 / 0751314

(71) Applicant: AISIN SEIKI KABUSHIKI KAISHA
Kariya City Aichi Pref. (JP)

(72) Inventors:
  • Nakane, Mototaka
    Nishikamo-gun, Aichi-ken (JP)
  • Kobayashi, Kiyonori
    Midori-ku, Nagoya-shi, Aichi-ken (JP)

(74) Representative: Leson, Thomas Johannes Alois, Dipl.-Ing. 
Tiedtke-Bühling-Kinne & Partner GbR, TBK-Patent, Bavariaring 4
80336 München
80336 München (DE)

   


(54) Clutch disc


(57) Provided is a clutch disc having a superior performance of increasing an allowable torque or an angle of torsion of the damper plate.
According to a first aspect, in a portion proximate to an end of a slit (31) at the peripheral (311) or the inner peripheral side (312) of the damper plate (21), the slit (31) with decreasing radius of curvature is curved away or curved toward a clutch axis such that both ends thereof are close to a radius of a concentric circle, respectively. According to a second aspect, a damper plate (22) has a plurality of first rivets and a plurality of first rivet holes (254) through (257) formed thereon. The radii (r) of the first rivet holes (254) through (257) gradually decrease as the distance between the clutch axis (C) and each thereof decreases, whereas the radii (r) thereof increase gradually as the distance between the clutch axis (C) and each thereof increases. According to third and fourth aspect, there is a dislocation between the inner periphery of each of annular damper plate (23) and (24) and the periphery thereof in the direction parallel with the clutch axis (C) so that the annular damper plates (23) and (24) have a certain thickness in the direction parallel with the clutch axis (C), respectively.






Search report